EP3492142A1 - Appareil électronique médical implantable et antenne d'émission/ de réception pour un tel appareil - Google Patents

Appareil électronique médical implantable et antenne d'émission/ de réception pour un tel appareil Download PDF

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Publication number
EP3492142A1
EP3492142A1 EP18199362.7A EP18199362A EP3492142A1 EP 3492142 A1 EP3492142 A1 EP 3492142A1 EP 18199362 A EP18199362 A EP 18199362A EP 3492142 A1 EP3492142 A1 EP 3492142A1
Authority
EP
European Patent Office
Prior art keywords
header
conductor
female terminal
terminal block
clip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18199362.7A
Other languages
German (de)
English (en)
Other versions
EP3492142B1 (fr
Inventor
Kathy Hartmann-Bax
Marina Ruschel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Biotronik SE and Co KG
Original Assignee
Biotronik SE and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Biotronik SE and Co KG filed Critical Biotronik SE and Co KG
Publication of EP3492142A1 publication Critical patent/EP3492142A1/fr
Application granted granted Critical
Publication of EP3492142B1 publication Critical patent/EP3492142B1/fr
Active legal-status Critical Current
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/273—Adaptation for carrying or wearing by persons or animals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/372—Arrangements in connection with the implantation of stimulators
    • A61N1/37211—Means for communicating with stimulators
    • A61N1/37217—Means for communicating with stimulators characterised by the communication link, e.g. acoustic or tactile
    • A61N1/37223—Circuits for electromagnetic coupling
    • A61N1/37229—Shape or location of the implanted or external antenna
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/14—Supports; Mounting means for wire or other non-rigid radiating elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/372—Arrangements in connection with the implantation of stimulators
    • A61N1/375—Constructional arrangements, e.g. casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Definitions

  • the invention relates to an implantable medical electronic device having a device body and a header attached thereto, with a telemetry module for signal transmission to and / or from outside the body of a patient in the implanted state of the device, in particular for wireless bidirectional communication, wherein the telemetry Assembly is assigned a largely from an elongated conductor spatially shaped, arranged in the header of the transmitting / receiving antenna. It further relates to a corresponding transmitting / receiving antenna.
  • implantable electronic medical devices transmit via short-range wireless communication links, the so-called telemetry, measured values recorded in the body or state values of the device outside the patient's body or receive control signals from the outside.
  • antennas are required for this communication.
  • the antenna provided in the implantable device is located outside the electromagnetically shielding device housing, ie in devices with a so-called header in the region of this header.
  • the telemetry antennas are subject to constant development. Examples of modern antennas of this kind are approximately in the US 7,317,946 B2 or the EP 2 643 050 B1 described. Both documents show the execution of such antennas with a Spiral or meander structure to increase the effective conductor length while maintaining the required compactness.
  • the US 7,317,946 B2 describes, incidentally, how a transmitting / receiving antenna of the generic type can be accommodated in a space-saving manner in the header of an implantable device and at the same time an advantageous antenna characteristic can be realized.
  • the invention has for its object to provide a further improved implantable medical electronic device and in particular a transmitting / receiving antenna for the telemetry function of such a device, in particular, a low installation cost and correspondingly low installation costs should be combined with advantageous electromagnetic properties.
  • an implantable medical device having a device body and a header mounted thereon.
  • the device further comprises a telemetry module for signal transmission to and / or from outside the body of a patient in the implanted state of the device, in particular for wireless bidirectional communication.
  • the telemetry subassembly is associated with a transmit / receive antenna, which is largely spatially formed from an elongated conductor and arranged in the region of the header has a positive connection with the outer contour of at least a portion of the header and is thereby fixed in the header.
  • a first section of the conductor is resilient and forms a clip, wherein the clip engages around a connector socket in the header.
  • the device may be an implantable pacemaker, an implantable cardioverter-defibrillator (ICD) or an implantable sensor.
  • ICD implantable cardioverter-defibrillator
  • a transmit / receive antenna of a telemetry package of an implantable medical electronic device has a device body and a header attached thereto.
  • the transmit / receive antenna is spatially shaped from an elongated conductor and configured to form a positive fit with the outer contour of a portion of the header and thereby be fixable in the header.
  • a first section of the conductor is resilient and forms a clip, so that with the clip a socket in the header is umgreifbar.
  • the transmitting / receiving antenna is configured such that it has a positive connection with the outer contour of at least part of the header and is thereby fixed on the header. It is understood that, in addition to the fixation meant here, there is also a connection of an antenna end with a connection pin in the header, which can be designed, for example, as welding, soldering, conductive adhesive connections or, alternatively, as a crimp, plug-in or clamp connection, however primarily serves the electrical connection between the telemetry module and the antenna.
  • the spring-elastic clip allows a particularly simple assembly by "clipping" the antenna on the otherwise pre-assembled internal structure of the header, without tools and in a single fixing step. It also allows a reliable fixation even in the presence of minor component tolerances and avoids handling errors during assembly.
  • a second portion of the conductor may be disposed on an upper surface of a female terminal block, the female terminal block having the female terminal.
  • connection conductor On one side of the female terminal block, at least one connection conductor may be arranged, which has an electrically conductive connection with the connection socket.
  • the at least one connection conductor establishes an electrical connection between a plug inserted into the connection socket and electronic components in the device body.
  • the top of the female terminal block and the side of the female terminal block may include a substantially right angle (within the range of manufacturing tolerances, eg 90 ° plus / minus 2 ° or 90 ° plus / minus 1 °). Due to the arrangement of a large part of the antenna on top of the female terminal block, the plane of the antenna does not intersect with the plane in which the (or) terminal conductor is (are) arranged. As a result, the interactions of the antenna and the at least one connecting conductor with a magnetic field are optimized and the MRI compatibility (MRI - magnetic resonance imaging, magnetic resonance tomography) of the device is ensured.
  • MRI compatibility MRI - magnetic resonance imaging, magnetic resonance tomography
  • the first portion of the conductor may be angled toward the second portion of the conductor located on top of the female terminal block.
  • the first portion and the second portion may include a substantially right angle (within the range of manufacturing tolerances, eg 90 ° plus / minus 2 ° or 90 ° plus / minus 1 °).
  • the antenna has exactly one clip with which the antenna is attached to the female terminal block.
  • the "clipping" of a clip on the socket together with the arrangement of most of the antenna (second section of the conductor) on the top of the female terminal block allows sufficient attachment.
  • the elongated conductor forming the substantial part of the antenna structure is band-shaped, specifically with a ratio between width and height of the band-shaped conductor 4: 1 or more, in particular more than 8: 1.
  • the antenna can be produced in a technologically particularly simple manner as a stamped and bent part of a suitable electrically conductive metal sheet or an electrically conductive metal foil and has a, on the material used, large radiating surface.
  • the transmitting / receiving antenna is arranged in a further advantageous embodiment in the largest part of its extent with a meandering course in a plane on the upper side and / or on a side surface of the header.
  • stiffening bridges are provided in the meandering arches at least in a section of the meandering course.
  • the clip may be formed as an ⁇ -shaped clip.
  • This version is particularly suitable for many devices with practically proven header designs, which include largely standardized connection sockets for electrode and / or sensor cables in their construction.
  • the ⁇ -shaped bracket also acts as an antenna.
  • the emission characteristic and the receiving characteristic of the antenna are improved due to the ⁇ -shaped bracket. This will also further enhance the device's MRI compatibility.
  • the antenna construction can be advantageously modified by appropriately adapted shaping of a functionally corresponding clip portion, or it can elastic hooks o.ä. be provided.
  • Fig. 1 shows in a cutout view a header 11 of a cardiac pacemaker 10 with connector components 11 a and an associated connection element 11 b for connection to electronic components (not shown) in a housing 13 of the pacemaker. Furthermore, the figure shows a frame-like transmitting / receiving antenna 15 and a connecting element 15 a associated therewith. It can be seen that the frame-like transmitting / receiving antenna 15 is arranged substantially freely “floating" in the header 11 and mechanically fixed only to the connection element 15a, which of course also serves its electrical connection.
  • Fig. 2 shows an exterior view of an inventively designed pacemaker 20 with a header 21 and a housing 23, wherein in the header 21, a transmitting / receiving antenna 25 according to the invention is arranged.
  • This transmission / reception antenna 25 is in Fig. 3 together with a female terminal block 21a shown in more detail in perspective.
  • a first section 25.2 is angled relative to a second section 27.
  • the first section 25.2 and the second section 27 form a right angle. It can be seen that the antenna 25 over most of its extension (second portion 27) with a meandering course in a plane on the upper side 26 of the female terminal block 21a and lie only their two end portions 25.1 and 25.2 outside this plane. End portion 25.1 leads to the connector (not shown) for connection to an associated telemetry assembly in the pacer housing.
  • the first section 25.2 is configured as an ⁇ -shaped bracket 24, which elastically surrounds a (for example cylindrical) connection socket 22 of the socket connection block 21a. It can also be seen that bridge-like connections are provided within the meander of the antenna profile, which cause an increase in the bending stiffness of the antenna structure.
  • the transmitting / receiving antenna 25 is formed as a flat stamped or shaped part.
  • a connection conductor 29 is arranged, which has an electrical connection to the connection socket 22.
  • the top 26 of the female terminal block 21a and the side 28 of the female terminal block 21a are at right angles.
  • FIGS. 4A to 4D show further embodiments of transmit / receive antennas 45A-45D.
  • the end portions of the meander of the antenna center section are bent at right angles, whereby an additional form-fitting with an in the assembled state underlying (not shown) socket assembly of the header can be formed.
  • the transmitting / receiving antennas 45C after Fig. 4C and 45D after Fig. 4D each have more than one clip portion and thus fix in the assembled state, the respective antenna at several points by elastically resilient embracing a cylindrical portion of the respective lying below the antenna (again not shown) header assembly.
  • the clip sections in all versions in addition to their mechanical fixation function also have an electrical function and affect the antenna characteristics advantageous.

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Electromagnetism (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Electrotherapy Devices (AREA)
EP18199362.7A 2017-11-30 2018-10-09 Appareil électronique médical implantable et antenne d'émission/ de réception pour un tel appareil Active EP3492142B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17204670.8A EP3492141A1 (fr) 2017-11-30 2017-11-30 Appareil électronique médical implantable et antenne d'émission/ de réception pour un tel appareil

Publications (2)

Publication Number Publication Date
EP3492142A1 true EP3492142A1 (fr) 2019-06-05
EP3492142B1 EP3492142B1 (fr) 2021-06-02

Family

ID=60515291

Family Applications (2)

Application Number Title Priority Date Filing Date
EP17204670.8A Withdrawn EP3492141A1 (fr) 2017-11-30 2017-11-30 Appareil électronique médical implantable et antenne d'émission/ de réception pour un tel appareil
EP18199362.7A Active EP3492142B1 (fr) 2017-11-30 2018-10-09 Appareil électronique médical implantable et antenne d'émission/ de réception pour un tel appareil

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP17204670.8A Withdrawn EP3492141A1 (fr) 2017-11-30 2017-11-30 Appareil électronique médical implantable et antenne d'émission/ de réception pour un tel appareil

Country Status (2)

Country Link
US (1) US10854961B2 (fr)
EP (2) EP3492141A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7317946B2 (en) * 2004-03-10 2008-01-08 Medtronic, Inc. Telemetry antenna for an implantable medical device
US20130116763A1 (en) * 2011-11-04 2013-05-09 Nevro Corporation Medical device communication and charging assemblies for use with implantable signal generators, and associated systems and methods
US20140364714A1 (en) * 2013-06-07 2014-12-11 Cardiac Pacemakers, Inc. Antennas for implantable medical devices
WO2016051206A1 (fr) * 2014-10-03 2016-04-07 Cambridge Consultants Limited Antenne pour implant, et appareil et procédés associés
EP3028740A1 (fr) * 2014-12-05 2016-06-08 BIOTRONIK SE & Co. KG Antenne pour un dispositif médical implantable

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110082523A1 (en) * 2009-10-05 2011-04-07 David Nghiem Multi-band antenna for implantable device
AU2011331947A1 (en) 2010-11-23 2013-06-20 Cardiac Pacemakers, Inc. Folded antennas for implantable medical devices

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7317946B2 (en) * 2004-03-10 2008-01-08 Medtronic, Inc. Telemetry antenna for an implantable medical device
US20130116763A1 (en) * 2011-11-04 2013-05-09 Nevro Corporation Medical device communication and charging assemblies for use with implantable signal generators, and associated systems and methods
US20140364714A1 (en) * 2013-06-07 2014-12-11 Cardiac Pacemakers, Inc. Antennas for implantable medical devices
WO2016051206A1 (fr) * 2014-10-03 2016-04-07 Cambridge Consultants Limited Antenne pour implant, et appareil et procédés associés
EP3028740A1 (fr) * 2014-12-05 2016-06-08 BIOTRONIK SE & Co. KG Antenne pour un dispositif médical implantable

Also Published As

Publication number Publication date
US20190165458A1 (en) 2019-05-30
US10854961B2 (en) 2020-12-01
EP3492141A1 (fr) 2019-06-05
EP3492142B1 (fr) 2021-06-02

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